Koichi Nishimura

12.2k total citations · 2 hit papers
254 papers, 9.2k citations indexed

About

Koichi Nishimura is a scholar working on Pulmonary and Respiratory Medicine, Physiology and Materials Chemistry. According to data from OpenAlex, Koichi Nishimura has authored 254 papers receiving a total of 9.2k indexed citations (citations by other indexed papers that have themselves been cited), including 138 papers in Pulmonary and Respiratory Medicine, 68 papers in Physiology and 23 papers in Materials Chemistry. Recurrent topics in Koichi Nishimura's work include Chronic Obstructive Pulmonary Disease (COPD) Research (93 papers), Asthma and respiratory diseases (51 papers) and Respiratory Support and Mechanisms (42 papers). Koichi Nishimura is often cited by papers focused on Chronic Obstructive Pulmonary Disease (COPD) Research (93 papers), Asthma and respiratory diseases (51 papers) and Respiratory Support and Mechanisms (42 papers). Koichi Nishimura collaborates with scholars based in Japan, United States and Australia. Koichi Nishimura's co-authors include Mitsuhiro Tsukino, Toru Oga, Takateru Izumi, Takashi Hajiro, Michiaki Mishima, Harumi Itoh, Akihiko Ikeda, Hiroshi Koyama, Susumu Satô and Masanori Kitaichi and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Physical Review Letters and Advanced Materials.

In The Last Decade

Koichi Nishimura

239 papers receiving 8.9k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Dyspnea Is a Better Predictor of 5-Year Survival Than Airway Obstruction in Patients With COPD

2002 737 citations Koichi Nishimura, Takateru Izumi et al. profile →
Computed Tomographic Measurements of Airway Dimensions and Emphysema in Smokers

2000 541 citations Yasutaka Nakano, Shigeo Muro et al. American Journal of Respiratory and Critical Care Medicine profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Koichi Nishimura Japan	43	6.4k	2.7k	678	518	511	254	9.2k
Masaharu Nishimura Japan	66	16.8k 2.6×	7.1k 2.6×	252 0.4×	697 1.3×	306 0.6×	644	26.4k
Myrna Dolovich Canada	44	6.8k 1.1×	2.9k 1.1×	121 0.2×	623 1.2×	300 0.6×	146	8.3k
Per Malmberg Sweden	49	1.8k 0.3×	1.6k 0.6×	845 1.2×	669 1.3×	96 0.2×	233	8.0k
Hak‐Kim Chan Australia	77	11.1k 1.7×	2.4k 0.9×	1.5k 2.2×	3.1k 6.0×	230 0.5×	541	21.4k
Philippe‐Jean Bousquet France	48	1.7k 0.3×	4.9k 1.8×	244 0.4×	276 0.5×	56 0.1×	211	9.8k
Kenneth R. Chapman Canada	65	9.1k 1.4×	7.9k 2.9×	35 0.1×	340 0.7×	118 0.2×	379	13.3k
Paul M. Young Australia	49	4.7k 0.7×	750 0.3×	543 0.8×	1.0k 1.9×	881 1.7×	317	8.9k
James C. Hogg Canada	90	21.0k 3.3×	10.1k 3.7×	72 0.1×	1.0k 2.0×	1.3k 2.5×	442	32.4k
Sarath Ranganathan Australia	48	5.4k 0.9×	899 0.3×	115 0.2×	324 0.6×	356 0.7×	262	8.9k
David R. Webb United Kingdom	52	1.2k 0.2×	1.4k 0.5×	135 0.2×	209 0.4×	49 0.1×	339	11.3k

Countries citing papers authored by Koichi Nishimura

Since Specialization

Citations

This map shows the geographic impact of Koichi Nishimura's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Koichi Nishimura with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koichi Nishimura more than expected).

Fields of papers citing papers by Koichi Nishimura

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Koichi Nishimura. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Koichi Nishimura. The network helps show where Koichi Nishimura may publish in the future.

Co-authorship network of co-authors of Koichi Nishimura

This figure shows the co-authorship network connecting the top 25 collaborators of Koichi Nishimura. A scholar is included among the top collaborators of Koichi Nishimura based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Koichi Nishimura. Koichi Nishimura is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Nishimura, Koichi, Hideki Ishihara, Hironori Fukuda, et al.. (2025). Impact of first-line dual immuno-oncology combination therapy versus immuno-oncology plus tyrosine kinase inhibitor on outcomes of second-line VEGFR-TKI in advanced RCC: a real-world multi-institutional analysis. International Urology and Nephrology. 58(3). 911–920.

Ishihara, Hiroki, Koichi Nishimura, Takayuki Nakayama, et al.. (2025). Impact of starting dose of tyrosine kinase inhibitors on outcomes following combination therapy of immune checkpoint inhibitors with tyrosine kinase inhibitors for previously untreated advanced renal cell carcinoma. Japanese Journal of Clinical Oncology. 56(1). 73–79.

Ishihara, Hiroki, Kenji Omae, Hidekazu Tachibana, et al.. (2024). First-line dual immune checkpoint inhibitor therapies versus combination therapies comprising immune checkpoint inhibitors and tyrosine kinase inhibitors for advanced renal cell carcinoma: a comparative analysis of the effectiveness using real-world data. International Journal of Clinical Oncology. 29(4). 473–480. 7 indexed citations

Ishihara, Hiroki, Koichi Nishimura, Takashi Ikeda, et al.. (2024). Changes in outcome of patients with advanced non-clear cell renal cell carcinoma from the tyrosine kinase inhibitor era to the immuno-oncology era. International Journal of Clinical Oncology. 29(11). 1730–1739.

Ishihara, Hiroki, Koichi Nishimura, Takashi Ikeda, et al.. (2024). Impact of body composition on outcomes of immune checkpoint inhibitor combination therapy in patients with previously untreated advanced renal cell carcinoma. Urologic Oncology Seminars and Original Investigations. 42(9). 291.e27–291.e37. 4 indexed citations

Yoshino, Maki, Hiroki Ishihara, Kazutaka Nakamura, et al.. (2022). Therapeutic role of deferred cytoreductive nephrectomy in patients with metastatic renal cell carcinoma treated with nivolumab plus ipilimumab. Japanese Journal of Clinical Oncology. 52(10). 1208–1214. 12 indexed citations

Nakagawa, Kyuya, et al.. (2021). Influence of processing conditions of atmospheric freeze-drying/low-temperature drying on the drying kinetics of sliced fruits and their vitamin C retention. Journal of Agriculture and Food Research. 6. 100231–100231. 15 indexed citations

Nishimura, Koichi, et al.. (2021). Are Fatigue and Pain Overlooked in Subjects with Stable Chronic Obstructive Pulmonary Disease?. Diagnostics. 11(11). 2029–2029. 7 indexed citations

Nishimura, Koichi, et al.. (2019). Comparison between electronic and paper versions of patient-reported outcome measures in subjects with chronic obstructive pulmonary disease: an observational study with a cross-over administration. BMJ Open. 9(12). e032767–e032767. 5 indexed citations

10.

Doi, Takeshi, et al.. (2015). Function of Wood Chips for Composting of Sewage Sludge byThermophilic and Aerobic Digestion. Journal of Residuals Science and Technology. 12(2).

11.

Juodkazis, Saulius, Koichi Nishimura, & Hiroaki Misawa. (2007). Three-dimensional laser structuring of materials at tight focusing. Chinese Optics Letters. 5(101). 198. 9 indexed citations

12.

Tanaka, Akihiro, et al.. (2006). Construction of Fingerprint Recognition System on fast fourier transform preprocessing by Layered Neural Network. IEICE Technical Report; IEICE Tech. Rep.. 105(659). 91–96. 1 indexed citations

13.

Niimi, Akio, Hisako Matsumoto, Ryoichi Amitani, et al.. (2000). Airway Wall Thickness in Asthma Assessed by Computed Tomography. American Journal of Respiratory and Critical Care Medicine. 162(4). 1518–1523. 297 indexed citations

14.

Nakano, Yasutaka, Shigeo Muro, Hiroaki Sakai, et al.. (2000). Computed Tomographic Measurements of Airway Dimensions and Emphysema in Smokers. American Journal of Respiratory and Critical Care Medicine. 162(3). 1102–1108. 541 indexed citations breakdown →

15.

Oga, Toru, Koichi Nishimura, Mitsuhiro Tsukino, et al.. (2000). The Effects of Oxitropium Bromide on Exercise Performance in Patients with Stable Chronic Obstructive Pulmonary Disease: A Comparison of Three Different Exercise Tests. American Journal of Respiratory and Critical Care Medicine. 161(6). 1897–1901. 130 indexed citations

16.

Hajiro, Takashi, Koichi Nishimura, Mitsuhiro Tsukino, et al.. (1999). A Novel, Short, and Simple Questionnaire to Measure Health-related Quality of Life in Patients with Chronic Obstructive Pulmonary Disease. American Journal of Respiratory and Critical Care Medicine. 159(6). 1874–1878. 94 indexed citations

17.

Hajiro, Takashi, Koichi Nishimura, Mitsuhiro Tsukino, et al.. (1998). Comparison of Discriminative Properties among Disease-specific Questionnaires for Measuring Health-related Quality of Life in Patients with Chronic Obstructive Pulmonary Disease. American Journal of Respiratory and Critical Care Medicine. 157(3). 785–790. 232 indexed citations

18.

Hajiro, Takashi, Koichi Nishimura, Mitsuhiro Tsukino, et al.. (1998). Analysis of Clinical Methods Used to Evaluate Dyspnea in Patients with Chronic Obstructive Pulmonary Disease. American Journal of Respiratory and Critical Care Medicine. 158(4). 1185–1189. 193 indexed citations

19.

Shimada, Takehiko, Hiroko Hayama, Masami Yamaguchi, Koichi Nishimura, & Masao Yoshida. (1997). Phylogenetic Studies on Prunus Species by Southern Blot Analysis of cpDNA. Kobe University Repository Kernel (Kobe University). 15. 59–71. 2 indexed citations

20.

Suzuki, Nobutake, Koichi Nishimura, & Okihiro Tokunaga. (1980). Radiation Treatment of Exhaust Gases,(XI) NO Removal in NO-H₂O-O₂-N₂Mixtures Containing SO₂. Journal of Nuclear Science and Technology. 17(5). 390–392. 5 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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